Hi, newbie here. A friend of mine gave me a Praktica Nova 1b PL that has a mirror stuck up in the upper position. In his own words, the mirror should come down only when the shutter is cocked. I can bring the mirror down by tilting a lever on the left side that keeps it locked in the up position, this can happen effectively only if the shutter is cocked. However I noticed that the same lever comes in to lock position after the shutter is released, effectively blocking the mirror in the upper position. I am a bit puzzled because I don't find on the net a clear explanation of the "normal" behaviour" of the mirror for such a camera model, let alone finding a service manual. The mirror is brought down by the sliding side-arms, the lever I speak of doesn't seem to be involved in the release, it doesn't make sense to me that it comes to the lock position. Any Praktica expert out there willing to hep me?